package com.itany.corejava.day07;

public class Test7 {
    public static void main(String[] args) {

        I1 i=new C1();

        System.out.println(I1.I);

        i.f1();

        ((I2)i).f2();


        C1 c=new C1();
        c.f1();
        c.f2();
        c.f3();
        c.f4();
        c.f5();
    }
}
